Lubricating apparatus



Aug. 7, 1928.

H. J. MURPHY LUBRICATING APPARATUS Filed March 14, 1922 Fig.4;

Patented Aug. 7, 1928.

UNITED STATES HOWARD 3'. MURPHY, OF READING, MASSACHUSETTS, ASSIGNOB, BY MEBNE ASSIGN- -MEN'1S, TO THE BASSICK MANUFACTURING COMPANY, OF CHICAGO,\ ILLINOIS, A.

"conrgnn'rronor DELAWARE.

'mmmoa'rme armm'rus.

Application fled March 14,

This invention pertains to improvements in lubricating apparatus. It is among the objects of the invention to provide simple and eflicient mechanisms for quick connee- '6 tion and disconnection of a source of lubricant under pressure with lubricant-receiving parts. r

- n the drawings, which show a preferred form of one embodiment of my invent1on:--

Fi ure 1 is a side elevation of a lubr cat- Fig. 2 is a central longitudinal section through the nozzle or discharge end of the device shown in Fig. 1, the lubr cant-receiving nipple shown in elevation immediately after entrance thereof within the nozzle of the device; 0 I

Fig. 3 is a view similar to Fig. 2, show ng the relation of the parts pursuant to the 1111- tial relative turning movement between nozzle and nipple; I Fig. 4 is a view pursuant to the couphng and valve opening operations;

Fig. 5'is an end elevation taken from the 2 left of Fig. 1;

Fig. 6 1s a section on the line 6+6 of Fig. 7 is a side elevation of the nozzle, the sleeve removed to show the interior parts thereof;

Fig. 8 includes aside and two end elevations of one of the interior nozzle parts;

Fig. 9 is a section on the line 9-9 of Fig. 3; and

Fig. 10 is a section on the l ne 10-10 of Fig. 4:;

Referring to the drawings and to the preferred form of my invention selected for, illustrative purposes, I have shown a lubricant supply device typified by the barrel 11 having a rear head 12 into wh ch 1s threaded the usual stem 13 carrying at its outer .end the handle 14 and having at its inner. end the usual lubricant-expelling piston (not shown).

" The dischar e nozzle or terminal portion includes coup mg means and, valve means for cooperation with a lubricant-reeeiving nipple 15 having-- an enlarged port1on 16 presenting underlying shoul ers and having at one end the usual lubricant-receiv ng opening with check valve 17. The coupling means lllustrated includes a coupling sleeve 1922.8eria11io.543,658. i .7

18, herein shown as retractile relative to its oooperatin parts, notably a sealing part 19 car ng t e sealing washer 20.

T e coupling sleeve 18 is connected to the front. head 21 of the gun by pins 22 carried by the latter and entering slots 23 in the latter. The sealing part 19 is held against rotation relative to the nipple 15' by suitable means ty ified b the ro'ections 25, 25 (Fig. 4;). P p 1 During the initial coupling operation, the couplin v sleeve 18 will turn wlth the head 21 relat1ve to the nipple-and sealin part 19 until the rojeotions on' the nipp e 15 are underlain y the flange portions 30 of the coupling, as shown in Fig. 5. During this initial coupling operation, turning between the sleeve 18 and sealing part 19 may take place, the pins 31, 31 moving in the slots 32, 32 from one end thereof to the opposite end (as shown in- Fig. 6) where the sleeve 18 can no longerturn, and the extensions 33 permit retractile movement of the sleeve 18 to be actuated by the inclined portion of the slots 23 acting on pins 22 to retract the sleeve and provide the,tight joint.

During this coupling and sealing o era-.

tion, the valve has been moving towar the opening position shown in Fig. 4, where the slot 39 extending across all but the periphery of the face of the valve disc 40 registers with the ports 41 in the sealing partto admit passage of. lubricant therethrou'gh vto the nipple 15. V f 7 As the pin 31, cooperating with thepin 22, opposes initiation of sealln until after the interlock between the nipp e and sleeve 18 is completed, so during uncoupling the pin 31 enga ing the steep side of the extension 33 o the slot 32 prevents an relative turning between the nip le 15 an sleeve 18,'to release the interlock t erebetween, until after the valve is closed and the in 22 returned to its position shown in Fig. 7, this completely releasiigg the seal.

s not. integral with move longitudinally The sealing part 19 the head .21, but'ma relative thereto and t erefore the movement of the pin 22 in. the slot 23 may'continue even after' the sealing part 19 is firmly ressed against the head ofthe nipfple, the ead 21 during this period moving orward while the sea'hng part 19'and valve disc 40 remain stationary axially considered. The

pin 50 which holds the valve disc against rotation relative to the head 21 has a slotted connection to permit this axial movement. T eparts are preferably so constructed that a small amount of this axial movement will precede communication of the valve ports,

thus insuring a tight seal. To prevent over difiicult operation when the lubricant in the,

barrel is under high pressure prior to opening of the valve, the effective valve area is greatly reduced by the reduced rear end 51 of the valve structure fitting a reducing plug 52 in the front head with appropriate cut washer.53. The valve disc may be further pressed'toward its seat by a valve spring 54 which is desirable when the pressure in the lubricant barrel is slight.

Even where the parts are so proportioned that no axial movement of'the valve disc 40 takes place the reduction at 52.is desirable because it prevents excess pressure between the valve parts when the lubricant in the barrel is under great pressure. Where no such axial movement is provided, it is desirable that a recess be made back-of the sealing gasket 20 so that tightness of the seal may be insured by pressure of the lubricant pursuant to opening of the valve.

While I have shown and described a'preferred form of one embodiment of my invention, it will be understood that changes involving omission, substitution, alteration and reversal of parts, and even changes inthe mode of operation, may be made without departing from the scope of my invention,

\ which is best defined in the following claims.

Claims:

1. Lubricating apparatus including a source of lubricant under pressure having a coupling sleeve rotatable relative to a nipple -to provide an interlock with projecting means provided onpthenipple, a cooperating sealing part and means for initiating re F valve means openable upon completion of source of lubricant under pressure having a coupling sleeve rotatable relative to a nipple ta provide, an. interlock with projecting means provided on the nipple, a cooperating sealing part and means for initiating traction of said sleeve relative to thesealing part pursuant to completion of the interlock and while said sleeve is held agalnst further rotative movement, and cooperating retractile movement of said-sleeve.

4. A lubricating apparatus comprising a source of lubricant under pressure including a ret-ractile coupling sleeve, sealing means therein and a-rotary valve controlling,

flow of lubricant to a lubricant receiving mpple, said valve openable only upon completion of the coupling and sealing-opera tions.

5. A lubricant-expelling device comprising means providing a source of lubricant underpressure, a retractile coupling sleeve at the discharge end of said device for coupling engagement with the lubricant-receiving nipple, and a rotary valve operable by rotation of said sleeve with respect to the .nipple for controlling flow of lubricant to, the nipple.

In testimony whereof, I have signed my name to this specification.

HOWARD J. MURPHY 

